Your Premier St. LouisWindow & Door Company.

Beauty, Efficiency and Value all backed by over 23 years of experience & premier Andersen® Certified Installation, Service and Warranty.

As a premier St. Louis patio door company, Keller Window & Door is your best choice. Choose from our huge selection of Andersen® patio doors and find the perfect style and function that’s right for you at lower costs than other providers while still getting that same Andersen® quality, durability and Certified Andersen® Installation and warranty you can trust. Whether it be a simple replacement door or complex design, Keller opens the door to endless possibilities.

Looking for a St. Louis window replacement company that provides one-stop, start-to-finish service for your window replacement project? At up to 40% less than other leading competitors, Keller Window & Door offers you an easy and reliable complete replacement process, all in one place. Choose from a wide selection of sizes, styles, colors, options, and features, all backed by Andersen’s® quality, style, affordability and Certified Andersen® installation and warranty.

Some REcent Installations

Robert- St. Louis, MO

“Keller Window & Door is a fantastic company to do business with. The service I had done was completed quickly and at a fair price. I would definitely recommend this company for window and doors.”

Vern & Steve- St. Louis, MO

"John Keller gave us exceptional service. He didn't pressure us to buy replacements but gave us a good price to replace 2 rotten sash. Why buy whole windows when the remainder is good? He fulfilled all time estimates and his installation was quick and immaculate! We highly recommend him!"

Audrey- St. Louis, MO

"Keller Windows delivered an excellent product on time. Representatives and workers were courteous and professional. I will definitely use Keller Windows in the future."

Why Should I Replace My Windows? Because Windows Matter.

Comfort

Windows help protect you and your home from nature’s harmful elements.